Script to stop the function of Right click and F5

<script language="javascript" type="text/javascript">
window.history.forward(1);
document.attachEvent("onkeydown", my_onkeydown_handler);
function my_onkeydown_handler()
{
switch (event.keyCode)
{
case 116 : // 'F5'
event.returnValue = false;
event.keyCode = 0;
//window.status = "We have disabled F5";
break;
}
}
document.onmousedown=disableclick;
status="Right Click is not allowed";
function disableclick(e)
{
if(event.button==2)
{
alert(status);
return false;
}
}
</script>

NOTE:-Works only in IE.